<ref name="ApproxCA">Beckers, S., Eberhardt, F., & Halpern, J. Y. (2020, August). Approximate causal abstractions. In Uncertainty in artificial intelligence (pp. 606-615). PMLR.</ref> | <ref name="ApproxCA">Beckers, S., Eberhardt, F., & Halpern, J. Y. (2020, August). Approximate causal abstractions. In Uncertainty in artificial intelligence (pp. 606-615). PMLR.</ref> |